Analog Devices Inc./Maxim Integrated MAX6376XR29+

Overview

MAX6376XR29+ from Maxim Integrated is an ultra-low-power, active-high push-pull voltage detector designed for precision supply monitoring in battery-powered systems. It features a factory-trimmed 2.93V threshold (±2.5% over temperature), 500nA supply current, and guaranteed operation down to 1V VCC. It asserts a logic-high output when VCC falls below threshold, enabling reliable power-fail detection in portable medical devices and low-power IoT sensors.

For engineers reviewing the MAX6376XR29+ datasheet, MAX6376XR29+ pinout, MAX6376XR29+ application, or MAX6376XR29+ equivalent, key selection criteria include its active-high push-pull output configuration, SC70-3 package footprint, 2.93V trip point with ±2.5% accuracy, transient immunity up to 200µs at 100mV overdrive, and compatibility with 1.2V–5.5V supply rails.

Technical Context

The MAX6376XR29+ implements a precision bandgap reference and comparator with internally trimmed resistors to set its 2.93V threshold-no external components required. Its active-high push-pull output drives high (VOH ≥ 0.8×VCC) when VCC drops below VTH and low (VOL ≤ 0.4V at 500µA) otherwise, eliminating need for external pull-up.

It ignores fast transients on VCC: maximum allowable negative-going glitch duration is 200µs at 100mV overdrive (VTH − VCC), per Typical Operating Characteristics. Guaranteed functional operation from VCC = 1.2V to 5.5V ensures robustness across brownout and startup conditions.

Key Specifications

Pinout & Package

MAX6376XR29+ is housed in a 3-pin SC70-3 package (2.0mm × 1.25mm × 0.95mm), optimized for space-constrained portable designs. The package is lead-free (RoHS-compliant), tape-and-reel packaged, and rated for −40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage detector applications.

Compared with TLV803EB29DPWR and APX803S-29SA-7, the MAX6376XR29+ uniquely combines SC70-3 miniaturization, true push-pull drive, and 500nA current in a single 2.93V detector-enabling smaller, simpler, and longer-lasting designs where board area and component count are constrained.

Availability

MAX6376XR29+ is available at Aetrix Electronics and suitable for portable medical devices, battery-powered IoT sensors, industrial handheld scanners, and safety-critical infusion pumps requiring stable component supply and long-term lifecycle support.

Supply support for MAX6376XR29+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.

The MAX6375–MAX6380 family was designed specifically for ultra-low-power supply monitoring in space- and energy-constrained portable electronics, delivering precision voltage detection without external components or calibration.

FAQ

What is the exact reset threshold voltage of the MAX6376XR29+?

The MAX6376XR29+ has a factory-trimmed nominal reset threshold of 2.93V, with guaranteed accuracy of ±2.5% over the full operating temperature range (−40°C to +85°C). This value is confirmed in Table 1 of the datasheet under suffix "R29", and applies specifically to the MAX6376 variant with active-high push-pull output. The MAX6376XR29+ maintains this threshold stability across its 1.2V–5.5V VCC range.

Does the MAX6376XR29+ require external components to operate?

No, the MAX6376XR29+ requires no external components. Its precision bandgap reference, comparator, and threshold-setting resistors are fully integrated and factory-trimmed. Unlike discrete solutions, it eliminates the need for external resistor dividers, capacitors, or pull-up resistors-reducing BOM count, PCB area, and calibration effort. This integration is explicitly stated in the General Description and Features sections of the datasheet.

What package type and dimensions does the MAX6376XR29+ use?

The MAX6376XR29+ is supplied in a 3-pin SC70-3 package measuring 2.0mm × 1.25mm × 0.95mm (body), with a 0.65mm pin pitch. This compact outline is documented in the Package Information section and illustrated in the Pin Configuration diagram. The "XR" in the part number explicitly denotes the SC70-3 variant, distinguishing it from the SOT23-3 version (UR suffix).

How does the MAX6376XR29+ behave during fast supply transients?

The MAX6376XR29+ is designed to ignore fast negative-going VCC transients: it will not assert output for glitches shorter than 200µs when VCC dips 100mV below the 2.93V threshold. This immunity is quantified in the Typical Operating Characteristics graph "Maximum Transient Duration vs. Threshold Overdrive". The internal comparator includes filtering to reject sub-microsecond noise, preventing false resets in noisy switching environments.

Is the MAX6376XR29+ compatible with 1.8V or 2.5V logic interfaces?

Yes, the MAX6376XR29+ is compatible with 1.8V and 2.5V logic systems. Its push-pull output guarantees VOH ≥ 0.8×VCC and VOL ≤ 0.4V (at specified load currents), meaning at VCC = 1.8V it delivers VOH ≥ 1.44V (exceeding 1.8V logic high minimum) and at VCC = 2.5V it delivers VOH ≥ 2.0V. This behavior is verified in the Electrical Characteristics table under VOH/VOL conditions for MAX6376.